demographic sample的意思|示意

To assess the effects of the demographic transition, the two researchers split the sample into women born before 1870 and those born in or after it.

为了评估人口过渡的影响，这两名研究员分头对在1870年前和在这时及之后进行生产的妇女进行取样。

The number of individuals in different demographic groups who would have provided usable information if response rates were equivalent. See sample weighting.

加权样本如果回复率相等，那么会提供有用信息的具有不同人口统计特征的个人。